docs: def items(self, prefix=None, delimiter=None):
      """Get an iterator for the items within this bucket.
  
      Args:
        prefix: an optional prefix to match items.
        delimiter: an optional string to simulate directory-like semantics. The returned items
             will be those whose names do not contain the delimiter after the prefix. For
             the remaining items, the names will be returned truncated after the delimiter
             with duplicates removed (i.e. as pseudo-directories).
      Returns:
        An iterable list of items within this bucket.
      """
      return _item.Items(self._name, prefix, delimiter, context=self._context)